The Cleveland Police spokeswoman said: “A police investigation has commenced and road closures are currently in place while the scene is examined. A motorcycle has been recovered nearby.”

One resident said: “I heard that there had been a motorbike accident but I don’t know how true that is.”

Inquiries are ongoing and police are asking anyone who witnessed the incident or anyone who has any information about how the man came about his injuries, to contact police on 101 or Crimestoppers anonymously on 0800 555 111.